E21D 11/36
Linings or supports specially shaped for tunnels or galleries of irregular cross-section
E21D11/36 (Linings or supports specially shaped for tunnels or galleries of irregular cross-section) appears on 1 US grants and 3 published applications in this corpus.
Search patents in E21D- Granted patents
- 1
- Published applications
- 3
- Assignees
- 3
- Inventors
- 5
- Latest grant
- 9 Jan 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 1 |
| 2024 | 1 | 0 |
By publication year.
Subgroups
Granted patents
Recent patents
- Bulkhead for facilitating backfilling of a stope upon mining thereof1 Jun 2023US 2023/0167740 A1Innovative Blasting Technologies Pty Ltd
- Panel system for rockburst or landslide containment in mining tunnels and road works consisting of a frame attached to a strap mesh whose nodes are linked by connecting buckles; and installation procedure11 Aug 2022US 2022/0251796 A1Garibaldi S.A.
- Control of Proppant Redistribution During Fracturing12 Mar 2020US 2020/0080403 A1Landmark Graphics Corporation
Most cited
By later US patents
No patent in this class has been cited by a later US patent yet.